<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 gutter:栅格间隔 -->
    <el-card>
      <el-row :gutter="20">
        <!-- 搜索框列 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>

        <!-- 按钮列 -->
        <el-col :span="4">
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 数据table -->
      <el-table :data="goodsList" border stripe>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <!-- 自定义时间格式 -->
          <template slot-scope="scope">{{scope.row.add_time | dateFormat}}</template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button type="primary" size="mini" icon="el-icon-edit"></el-button>
            <el-button
              type="danger"
              size="mini"
              icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
  </div>
</template>
<script>
export default {
  data() {
    return {
      //查询对象
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 10
      },
      //商品列表
      goodsList: [],
      //商品总数
      total: 0
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    //根据分页获取商品数据
    async getGoodsList() {
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品列表失败");
      }

      console.log(res.data);
      this.goodsList = res.data.goods;
      this.total = res.data.total;
    },
    //页大小改变触发
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    //页码改变触发
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },
    //根据商品id删除数据
    async removeById(id) {
      const confirmResult = await this.$confirm("此操作将永久删除该商品, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).catch(err => err);

      if(confirmResult !== 'confirm'){
          return this.$message.info('已取消删除')
      }

      const {data:res} = await this.$http.delete(`goods/${id}`)

      if(res.meta.status !== 200){
          return this.$message.error('删除商品失败')
      }

      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    //点击添加商品按钮跳转到添加页面
    goAddPage(){
        //跳转到指定路径
        this.$router.push('/goods/add')
    }
  }
};
</script>
<style lang="less" scoped>
</style>